Occurrence of arsenic in core sediments and groundwater in the Chapai-Nawabganj District, northwestern Bangladesh
Groundwater and core sediments of two boreholes (to a depth of 50 m) from the Chapai-Nawabganj area in northwestern Bangladesh were collected for arsenic concentration and geochemical analysis. Groundwater arsenic concentrations in the uppermost aquifer (10–40 m of depth) range from 2.8 μg L −1 to 4...
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| Veröffentlicht in: | Water research (Oxford) 2010-03, Vol.44 (6), p.2021-2037 |
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| creator | Selim Reza, A.H.M. Jean, Jiin-Shuh Yang, Huai-Jen Lee, Ming-Kuo Woodall, Brian Liu, Chia-Chuan Lee, Jyh-Fu Luo, Shang-De |
| description | Groundwater and core sediments of two boreholes (to a depth of 50
m) from the Chapai-Nawabganj area in northwestern Bangladesh were collected for arsenic concentration and geochemical analysis. Groundwater arsenic concentrations in the uppermost aquifer (10–40
m of depth) range from 2.8
μg
L
−1 to 462.3
μg
L
−1. Groundwater geochemical conditions change from oxidized to successively more reduced, higher As concentration with depth. Higher sediment arsenic levels (55
mg
kg
−1) were found within the upper 40
m of the drilled core samples. X-ray absorption near-edge structure spectroscopy was employed to elucidate the arsenic speciation of sediments collected from two boreholes. Environmental scanning electron microscopy and transmission X-ray microscopy were used to investigate the characteristics of FeOOH in sediments which adsorb arsenic. In addition, a pH–Eh diagram was drawn using the Geochemist's Workbench (GWB) software to elucidate the arsenic speciation in groundwater. The dominant groundwater type is Ca–HCO
3 with high concentrations of As, Fe and Mn but low levels of NO
3
− and SO
4
2−. Sequential extraction analysis reveals that Mn and Fe hydroxides and organic matter are the major leachable solids carrying As. High levels of arsenic concentration in aquifers are associated with fine-grained sediments. Fluorescent intensities of humic substances indicate that both groundwater and sediments in this arsenic hotspot area contain less organic matter compared to other parts of Bengal basin. Statistical analysis clearly shows that As is closely associated with Fe and Mn in sediments while As is better correlated with Mn in groundwater. These correlations along with results of sequential leaching experiments suggest that reductive dissolution of MnOOH and FeOOH mediated by anaerobic bacteria represents an important mechanism for releasing arsenic into the groundwater. |
| doi_str_mv | 10.1016/j.watres.2009.12.006 |
| format | Article |
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m) from the Chapai-Nawabganj area in northwestern Bangladesh were collected for arsenic concentration and geochemical analysis. Groundwater arsenic concentrations in the uppermost aquifer (10–40
m of depth) range from 2.8
μg
L
−1 to 462.3
μg
L
−1. Groundwater geochemical conditions change from oxidized to successively more reduced, higher As concentration with depth. Higher sediment arsenic levels (55
mg
kg
−1) were found within the upper 40
m of the drilled core samples. X-ray absorption near-edge structure spectroscopy was employed to elucidate the arsenic speciation of sediments collected from two boreholes. Environmental scanning electron microscopy and transmission X-ray microscopy were used to investigate the characteristics of FeOOH in sediments which adsorb arsenic. In addition, a pH–Eh diagram was drawn using the Geochemist's Workbench (GWB) software to elucidate the arsenic speciation in groundwater. The dominant groundwater type is Ca–HCO
3 with high concentrations of As, Fe and Mn but low levels of NO
3
− and SO
4
2−. Sequential extraction analysis reveals that Mn and Fe hydroxides and organic matter are the major leachable solids carrying As. High levels of arsenic concentration in aquifers are associated with fine-grained sediments. Fluorescent intensities of humic substances indicate that both groundwater and sediments in this arsenic hotspot area contain less organic matter compared to other parts of Bengal basin. Statistical analysis clearly shows that As is closely associated with Fe and Mn in sediments while As is better correlated with Mn in groundwater. These correlations along with results of sequential leaching experiments suggest that reductive dissolution of MnOOH and FeOOH mediated by anaerobic bacteria represents an important mechanism for releasing arsenic into the groundwater.</description><identifier>ISSN: 0043-1354</identifier><identifier>EISSN: 1879-2448</identifier><identifier>DOI: 10.1016/j.watres.2009.12.006</identifier><identifier>PMID: 20053416</identifier><identifier>CODEN: WATRAG</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Applied sciences ; Arsenic ; Arsenic - analysis ; Arsenic - isolation & purification ; Bacteria ; Bangladesh ; Boreholes ; Carbonates ; Chapai-Nawabganj ; Chemical Precipitation ; Environmental scanning electron microscopy (ESEM) ; Exact sciences and technology ; Ferric Compounds ; Geochemistry ; Geography ; Geologic Sediments - chemistry ; Groundwater ; Hydrogen-Ion Concentration ; Iron ; Iron - analysis ; Manganese ; Manganese - analysis ; Microscopy, Electron, Scanning ; Minerals - analysis ; Northwestern Bangladesh ; Other industrial wastes. Sewage sludge ; Oxidation-Reduction ; Pollution ; Sediments ; Selenium - analysis ; Soil - analysis ; Spectrometry, Fluorescence ; Strontium - analysis ; Transmission X-ray microscopy (TXM) ; Wastes ; Water - chemistry ; Water Pollutants, Chemical - analysis ; Water Supply - analysis ; Water treatment and pollution ; X-ray absorption near-edge structure (XANES) ; X-Ray Absorption Spectroscopy</subject><ispartof>Water research (Oxford), 2010-03, Vol.44 (6), p.2021-2037</ispartof><rights>2009 Elsevier Ltd</rights><rights>2015 INIST-CNRS</rights><rights>Copyright 2009 Elsevier Ltd. All rights reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c522t-55f4126b878eba99262b9501d3308e9477d09566e2c28cb5bf7f8611ee64acb13</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.watres.2009.12.006$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=22579747$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/20053416$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Selim Reza, A.H.M.</creatorcontrib><creatorcontrib>Jean, Jiin-Shuh</creatorcontrib><creatorcontrib>Yang, Huai-Jen</creatorcontrib><creatorcontrib>Lee, Ming-Kuo</creatorcontrib><creatorcontrib>Woodall, Brian</creatorcontrib><creatorcontrib>Liu, Chia-Chuan</creatorcontrib><creatorcontrib>Lee, Jyh-Fu</creatorcontrib><creatorcontrib>Luo, Shang-De</creatorcontrib><title>Occurrence of arsenic in core sediments and groundwater in the Chapai-Nawabganj District, northwestern Bangladesh</title><title>Water research (Oxford)</title><addtitle>Water Res</addtitle><description>Groundwater and core sediments of two boreholes (to a depth of 50
m) from the Chapai-Nawabganj area in northwestern Bangladesh were collected for arsenic concentration and geochemical analysis. Groundwater arsenic concentrations in the uppermost aquifer (10–40
m of depth) range from 2.8
μg
L
−1 to 462.3
μg
L
−1. Groundwater geochemical conditions change from oxidized to successively more reduced, higher As concentration with depth. Higher sediment arsenic levels (55
mg
kg
−1) were found within the upper 40
m of the drilled core samples. X-ray absorption near-edge structure spectroscopy was employed to elucidate the arsenic speciation of sediments collected from two boreholes. Environmental scanning electron microscopy and transmission X-ray microscopy were used to investigate the characteristics of FeOOH in sediments which adsorb arsenic. In addition, a pH–Eh diagram was drawn using the Geochemist's Workbench (GWB) software to elucidate the arsenic speciation in groundwater. The dominant groundwater type is Ca–HCO
3 with high concentrations of As, Fe and Mn but low levels of NO
3
− and SO
4
2−. Sequential extraction analysis reveals that Mn and Fe hydroxides and organic matter are the major leachable solids carrying As. High levels of arsenic concentration in aquifers are associated with fine-grained sediments. Fluorescent intensities of humic substances indicate that both groundwater and sediments in this arsenic hotspot area contain less organic matter compared to other parts of Bengal basin. Statistical analysis clearly shows that As is closely associated with Fe and Mn in sediments while As is better correlated with Mn in groundwater. These correlations along with results of sequential leaching experiments suggest that reductive dissolution of MnOOH and FeOOH mediated by anaerobic bacteria represents an important mechanism for releasing arsenic into the groundwater.</description><subject>Applied sciences</subject><subject>Arsenic</subject><subject>Arsenic - analysis</subject><subject>Arsenic - isolation & purification</subject><subject>Bacteria</subject><subject>Bangladesh</subject><subject>Boreholes</subject><subject>Carbonates</subject><subject>Chapai-Nawabganj</subject><subject>Chemical Precipitation</subject><subject>Environmental scanning electron microscopy (ESEM)</subject><subject>Exact sciences and technology</subject><subject>Ferric Compounds</subject><subject>Geochemistry</subject><subject>Geography</subject><subject>Geologic Sediments - chemistry</subject><subject>Groundwater</subject><subject>Hydrogen-Ion Concentration</subject><subject>Iron</subject><subject>Iron - analysis</subject><subject>Manganese</subject><subject>Manganese - analysis</subject><subject>Microscopy, Electron, Scanning</subject><subject>Minerals - analysis</subject><subject>Northwestern Bangladesh</subject><subject>Other industrial wastes. Sewage sludge</subject><subject>Oxidation-Reduction</subject><subject>Pollution</subject><subject>Sediments</subject><subject>Selenium - analysis</subject><subject>Soil - analysis</subject><subject>Spectrometry, Fluorescence</subject><subject>Strontium - analysis</subject><subject>Transmission X-ray microscopy (TXM)</subject><subject>Wastes</subject><subject>Water - chemistry</subject><subject>Water Pollutants, Chemical - analysis</subject><subject>Water Supply - analysis</subject><subject>Water treatment and pollution</subject><subject>X-ray absorption near-edge structure (XANES)</subject><subject>X-Ray Absorption Spectroscopy</subject><issn>0043-1354</issn><issn>1879-2448</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkU2P0zAQhi0EYsvCP0DIF8QeSPC3nctKUD6lFXuBs-U4k9ZV6nTthIp_v45a4Lac5vK874zmQeglJTUlVL3b1Uc3Jcg1I6SpKasJUY_QihrdVEwI8xitCBG8olyKC_Qs5x0hhDHePEUXJSK5oGqF7m69n1OC6AGPPXYpQwweh4j9mABn6MIe4pSxix3epHGOXVkLaSGmLeD11h1cqL67o2s3Lu7wx5CnFPz0FscxTdsj5EJH_MHFzeA6yNvn6EnvhgwvzvMS_fz86cf6a3Vz--Xb-v1N5SVjUyVlLyhTrdEGWtc0TLG2kYR2nBMDjdC6I41UCphnxrey7XVvFKUASjjfUn6J3px6D2m8m8sZdh-yh2FwEcY5Wy0U0VIZ83-Sc2UkM0vn1YMk1bx81lBKCipOqE9jzgl6e0hh79JvS4ldBNqdPQm0i0BLmS0CS-zVecPc7qH7G_pjrACvz4DL3g19ctGH_I9jUjda6MJdnzgoP_4VINnsw6K5Cwn8ZLsxPHzJPUuwuws</recordid><startdate>20100301</startdate><enddate>20100301</enddate><creator>Selim Reza, A.H.M.</creator><creator>Jean, Jiin-Shuh</creator><creator>Yang, Huai-Jen</creator><creator>Lee, Ming-Kuo</creator><creator>Woodall, Brian</creator><creator>Liu, Chia-Chuan</creator><creator>Lee, Jyh-Fu</creator><creator>Luo, Shang-De</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>7X8</scope><scope>7QH</scope><scope>7ST</scope><scope>7T7</scope><scope>7TV</scope><scope>7UA</scope><scope>C1K</scope><scope>F1W</scope><scope>H97</scope><scope>L.G</scope><scope>P64</scope><scope>SOI</scope></search><sort><creationdate>20100301</creationdate><title>Occurrence of arsenic in core sediments and groundwater in the Chapai-Nawabganj District, northwestern Bangladesh</title><author>Selim Reza, A.H.M. ; Jean, Jiin-Shuh ; Yang, Huai-Jen ; Lee, Ming-Kuo ; Woodall, Brian ; Liu, Chia-Chuan ; Lee, Jyh-Fu ; Luo, Shang-De</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c522t-55f4126b878eba99262b9501d3308e9477d09566e2c28cb5bf7f8611ee64acb13</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Applied sciences</topic><topic>Arsenic</topic><topic>Arsenic - analysis</topic><topic>Arsenic - isolation & purification</topic><topic>Bacteria</topic><topic>Bangladesh</topic><topic>Boreholes</topic><topic>Carbonates</topic><topic>Chapai-Nawabganj</topic><topic>Chemical Precipitation</topic><topic>Environmental scanning electron microscopy (ESEM)</topic><topic>Exact sciences and technology</topic><topic>Ferric Compounds</topic><topic>Geochemistry</topic><topic>Geography</topic><topic>Geologic Sediments - chemistry</topic><topic>Groundwater</topic><topic>Hydrogen-Ion Concentration</topic><topic>Iron</topic><topic>Iron - analysis</topic><topic>Manganese</topic><topic>Manganese - analysis</topic><topic>Microscopy, Electron, Scanning</topic><topic>Minerals - analysis</topic><topic>Northwestern Bangladesh</topic><topic>Other industrial wastes. Sewage sludge</topic><topic>Oxidation-Reduction</topic><topic>Pollution</topic><topic>Sediments</topic><topic>Selenium - analysis</topic><topic>Soil - analysis</topic><topic>Spectrometry, Fluorescence</topic><topic>Strontium - analysis</topic><topic>Transmission X-ray microscopy (TXM)</topic><topic>Wastes</topic><topic>Water - chemistry</topic><topic>Water Pollutants, Chemical - analysis</topic><topic>Water Supply - analysis</topic><topic>Water treatment and pollution</topic><topic>X-ray absorption near-edge structure (XANES)</topic><topic>X-Ray Absorption Spectroscopy</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Selim Reza, A.H.M.</creatorcontrib><creatorcontrib>Jean, Jiin-Shuh</creatorcontrib><creatorcontrib>Yang, Huai-Jen</creatorcontrib><creatorcontrib>Lee, Ming-Kuo</creatorcontrib><creatorcontrib>Woodall, Brian</creatorcontrib><creatorcontrib>Liu, Chia-Chuan</creatorcontrib><creatorcontrib>Lee, Jyh-Fu</creatorcontrib><creatorcontrib>Luo, Shang-De</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>MEDLINE - Academic</collection><collection>Aqualine</collection><collection>Environment Abstracts</collection><collection>Industrial and Applied Microbiology Abstracts (Microbiology A)</collection><collection>Pollution Abstracts</collection><collection>Water Resources Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 3: Aquatic Pollution & Environmental Quality</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Environment Abstracts</collection><jtitle>Water research (Oxford)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Selim Reza, A.H.M.</au><au>Jean, Jiin-Shuh</au><au>Yang, Huai-Jen</au><au>Lee, Ming-Kuo</au><au>Woodall, Brian</au><au>Liu, Chia-Chuan</au><au>Lee, Jyh-Fu</au><au>Luo, Shang-De</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Occurrence of arsenic in core sediments and groundwater in the Chapai-Nawabganj District, northwestern Bangladesh</atitle><jtitle>Water research (Oxford)</jtitle><addtitle>Water Res</addtitle><date>2010-03-01</date><risdate>2010</risdate><volume>44</volume><issue>6</issue><spage>2021</spage><epage>2037</epage><pages>2021-2037</pages><issn>0043-1354</issn><eissn>1879-2448</eissn><coden>WATRAG</coden><abstract>Groundwater and core sediments of two boreholes (to a depth of 50
m) from the Chapai-Nawabganj area in northwestern Bangladesh were collected for arsenic concentration and geochemical analysis. Groundwater arsenic concentrations in the uppermost aquifer (10–40
m of depth) range from 2.8
μg
L
−1 to 462.3
μg
L
−1. Groundwater geochemical conditions change from oxidized to successively more reduced, higher As concentration with depth. Higher sediment arsenic levels (55
mg
kg
−1) were found within the upper 40
m of the drilled core samples. X-ray absorption near-edge structure spectroscopy was employed to elucidate the arsenic speciation of sediments collected from two boreholes. Environmental scanning electron microscopy and transmission X-ray microscopy were used to investigate the characteristics of FeOOH in sediments which adsorb arsenic. In addition, a pH–Eh diagram was drawn using the Geochemist's Workbench (GWB) software to elucidate the arsenic speciation in groundwater. The dominant groundwater type is Ca–HCO
3 with high concentrations of As, Fe and Mn but low levels of NO
3
− and SO
4
2−. Sequential extraction analysis reveals that Mn and Fe hydroxides and organic matter are the major leachable solids carrying As. High levels of arsenic concentration in aquifers are associated with fine-grained sediments. Fluorescent intensities of humic substances indicate that both groundwater and sediments in this arsenic hotspot area contain less organic matter compared to other parts of Bengal basin. Statistical analysis clearly shows that As is closely associated with Fe and Mn in sediments while As is better correlated with Mn in groundwater. These correlations along with results of sequential leaching experiments suggest that reductive dissolution of MnOOH and FeOOH mediated by anaerobic bacteria represents an important mechanism for releasing arsenic into the groundwater.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><pmid>20053416</pmid><doi>10.1016/j.watres.2009.12.006</doi><tpages>17</tpages></addata></record> |
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| ispartof | Water research (Oxford), 2010-03, Vol.44 (6), p.2021-2037 |
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| language | eng |
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| source | MEDLINE; Access via ScienceDirect (Elsevier) |
| subjects | Applied sciences Arsenic Arsenic - analysis Arsenic - isolation & purification Bacteria Bangladesh Boreholes Carbonates Chapai-Nawabganj Chemical Precipitation Environmental scanning electron microscopy (ESEM) Exact sciences and technology Ferric Compounds Geochemistry Geography Geologic Sediments - chemistry Groundwater Hydrogen-Ion Concentration Iron Iron - analysis Manganese Manganese - analysis Microscopy, Electron, Scanning Minerals - analysis Northwestern Bangladesh Other industrial wastes. Sewage sludge Oxidation-Reduction Pollution Sediments Selenium - analysis Soil - analysis Spectrometry, Fluorescence Strontium - analysis Transmission X-ray microscopy (TXM) Wastes Water - chemistry Water Pollutants, Chemical - analysis Water Supply - analysis Water treatment and pollution X-ray absorption near-edge structure (XANES) X-Ray Absorption Spectroscopy |
| title | Occurrence of arsenic in core sediments and groundwater in the Chapai-Nawabganj District, northwestern Bangladesh |
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